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ADUST COLLECTOR. 170.377,719. Pat'tedfeb. 7, 1888.`

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ORVILLE M. MOR-SE, OF JACKSON, MICHIGAN, ASSIGNOR TO THE KNICKER- BOCKER COMPANY, OF SAME PLACE.

DUST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 377.719. dated February '7l 1838-V Apploation tiled September 2, 1887. Serial No. 248,583. (No model.)

To all whom it may concern.- i

Be it known that I, ORvILLE M. MorzsE, of Jackson, in the county of Jackson and State of Michigan, have invented a new and useful Improvement in Dust Collectors, of which the following is a specification.

This invention relates to a dust-,collector which is provided with a conical or tapering separating-chamber, into which the dust-laden air is delivered from a tangential inlet-spout, whereby the air is caused to assume a whirling or gyrating motion in the separating-chamber. This motion of the air kcauses the solid particles to pass into the outer layer of the whirling body of air and to be deposited against the inner surface of the separatingchamber, which latter is .provided with an escape-opening for the purified air. A dustcollector of this kind is described in an application for patent iledby me March 31, 1886, Serial No. 197,307.

The obj ectof my present invention is to provide simple means for discharging the light dust from the separating-case without permitting the air to escape with it.

vMy invention consists of the improvements,

which will be hereinafter fully-described, and

pointed out in the claims.

In the accompanying drawings, consisting of two sheets, Figure l is a sectional elevation of a dust-collector provided with my improvements. Fig. 2 -is a bottom plan View of the machine. Fig. 3 is a sectional elevation of a modified construction of this machine.

Like letters of reference refer to like parts in the several figures.

A represents the stationary frame of the machine, and B the conical or tapering separating-chamber supported with its large end or base upon the frame A.

C represents the spout, through which the dust-laden air enters the separating-chamber B in a tangential direction.

D represents the head,which closes thelarge end of the separating-chamber, and which is provided with a large central opening, d, through which the puried air escapes from the separating chamber. The separatingchamber is closed at its upper small end or top and provided with an internal dust-discharge vconduct the same downwardly and out of the separating-.chamber through the airexit d.

The upper portion of the dust-discharge conduit F is preferably enlarged in the shape of areceiving-funneLf. The conduit F delivers the dust below the separating-chamber to a conveyer, G, or some other suitable device, by which it isremoved. The conduit F is held in place in the separating-chamber by suitable supports, f f2. The dust-laden air enters the tapering separating-chamber from the spout C in a tangential direction and assumes a whirling motion in the separating-chamber, forming a vortex in which the dust-particles are quicklyI driven to the periphery of the whirling body of airthereby freeing the inner portion of the whirling body of air from dust. The fine and light dust-particles move in helical lines of gradually-decreasing radius toward the small end of the tapering chamber B, and drop finally intothe conduit F, by which they are conducted out of the separating-chamber. instance, coarse middlings or broken wheat lwhen the machine is used in aiour-millf-pass The coarse andheavy dust-particles-i'or out through the dust-discharge e at the large end of the separating-chamber. Vhen the dust-laden air contains no coarse dust, the discharge-opening at the large end of the separating-chamber may be omitted, as all the light and fine dust will pass to the small end of the separating-chamber, which lies in the axis of the vortexby reason of the air-pressure,which is caused by the vortex, and which is greatest at'the large end of the separating-chamber and horizontally,'and the dust-discharge conduit is arranged horizontally and provided with a IOO screw-conveyer, H, by which the dust is removed to a discharge-spout, h, or some suitable receptacle.

When it is desired to collect only coarse dust with my improved dust-collector-as, for instance, when the machine is used for collecting sawdust, shavings, &c.--the separatingchamber is provided with an internal spiral flange, i, as represented in Fig. 3, which deflects all of the dust toward the small end of the separating-chamber.

I do not wish to claim in this application any patentable features of this machine except those specifically set forth in the claims, and I reserve the right to claim all other patentable features in certain other applications for patent heretofore filed by. me, particularly Serial No. 197,307, led March 3l, 1886, and Serial No. 201,540, filed August 22, 1887.

I claim as my invention- 1. The combination, with the tapering separating-chamber having its small end closed and provided with an air-exit at its large end, of means whereby the air is caused to rotate in the separating-chamber, and an internal dustdischarge conduit which receives the dust at lthe small end of the separatingchamber and conducts the dust out of said chamber, substantially as set forth.

2. The combination, with the tapering separating-chamber having its small end closed and provided with an air-exit at its lowerlarge end and a suitable inlet-spout, of a central dustdischarge conduit extending upwardly into the separating-chamber and terminating near the small end thereof, substantially as set forth.

3. rIhe combination, with the separatingchamber provided with an external tangential inlet-spout and having a central air-exit at one end, of an internal dust-discharge conduit arranged axially in the separating-chamber and extending outwardly through the air exit thereof, substantially as set forth.

4. The combination, with the tapering separating-chamber having its small end closed and provided with an air-exit at its large end, of means whereby the air is caused to rotate in said chamber, a dust-discharge opening formed at the large end of the separatingchamber,

`and an internal dust-discharge conduit which receives the dust at the small end of the separatingchamber and conducts the same out of said chamber, substantially as set forth.

Witness my hand this 29th day of August, 1887.

ORVILLE M. MORSE.

Witnesses:

C. 151. BENNETT, SAML. H. CAMP. 

